![]() For now, any concerned users should head to the Piriform website to download the latest software. Yung said the company wouldn't speculate on how the attack happened or possible perpetrators. It's unclear just who was behind the attacks. That led to the conclusion that the attackers hadn't launched the second phase of their attack to cause more harm to victims. He told Forbes the company used its Avast security tool to scan machines on which the affected CCleaner app was installed (in 30 per cent of Avast installs, CCleaner was also resident on the PC). but it could be useful in follow-up targeted attacks against specific users."Īvast chief technology officer Ondrej Vlcek said there was, however, little reason to panic. It seems that CClearner, one of PCWorlds recommendations for the best free software for new PCs, might not have been keeping your PC so clean after all. Of course, it may be that they really only stole. Of the Piriform claim it had no evidence of much wrongdoing by the hacker, Grooten added: "As I read the Cisco blog, there was a backdoor that could have been used for other purposes. "I have a feeling they are downplaying it indeed," said Martijn Grooten, editor of security publication Virus Bulletin. Not all are convinced by the claims of Piriform, acquired by Avast in July. In other words, to the best of our knowledge, we were able to disarm the threat before it was able to do any harm." "Users of CCleaner Cloud version have received an automatic update. "The threat has now been resolved in the sense that the rogue server is down, other potential servers are out of the control of the attacker. ![]() The CCleaner app, designed to help users carry out good cyber hygiene, was itself infected. For weeks then, the malware was spreading inside supposedly-legitimate security software. Talos warned in a blog Monday that the affected version was released on August 15, but on September 12 an untainted version 5.34 was released. The affected app, CCleaner, gets 5 million downloads a week, making the threat particularly severe, researchers at Cisco Talos warned.įurther investigation found the CCleaner download server was hosting the backdoored app as far back as September 11. According to Avast's own figures, 2.27 million ran the affected software, though the company said users should not panic. The tainted application allows for download of further malware, be it ransomware or keyloggers, with fears millions are affected. Hackers put malware in popular PC utility CCleaner Written by Chris Bing CYBERSCOOP Security researchers say hackers were able to booby-trap a popular tool offered by Czech cybersecurity firm Avast to remotely install a backdoor implant on millions of computers, according to new research by Cisco’s Talos team. Users of Avast-owned security application CCleaner for Windows have been advised to update their software immediately, after researchers discovered criminal hackers had installed a backdoor in the tool. This trust relationship is then abused to attack organizations and individuals and may be performed for a number of different reasons." This is because with supply chain attacks, the attackers are relying on the trust relationship between a manufacturer or supplier and a customer. They said: "Supply chain attacks are a very effective way to distribute malicious software into target organizations. Warning: CCleaner Hacked to Distribute Malware Over 2.3 Million Users Infected The Hacker News reported that CCleaner has been backdoored in a supply. 13 version is said to be clean, according to Avast, with its 2 billion users who are not affected. 13, Cisco Talos found that the official download of the free versions of CCleaner 5.33 and CCleaner Cloud also contained “a malicious payload that featured a Domain Generation Algorithm as well as hardcoded Command and Control functionality.” What that means is that a hacker infiltrated Avast Piriform’s official build somewhere in the development process build to plant malware designed to steal users’ data.Ĭisco Talos suspects that the attacker “compromised a portion of (CCleaner’s) development or build environment and leveraged that access to insert malware into the CCleaner build that was released and hosted by the organization.” As such, customers’ personal information was not at risk.Cisco's TALOS security researchers discovered a devious way to infect millions of machines. ssct) has discovered a malicious bit of code injected by hackers that could have affected more than 2 million users who downloaded the most recent update. In an in-depth probe of the popular optimization and scrubbing software, Cisco Talos (go. It seems that CCleaner, one of PCWorld’s recommendations for the best free software for new PCs (go./fspc), might not have been keeping your PC so clean after all. For those affected by the CCleaner malware from earlier in the week who. ![]() More than 2 million users possibly at risk. With news of this recent breach, it seems that mission failed, as hackers were. CCleaner Hacked With Malware: What You Need To Know PCWorld | November 2017 ![]()
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